Topics created by hbrownell

@hbrownell

https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

Check the filament diameter setting in the printer profile. Cura has a tendency to switch to 2.85mm filament

Otherwise share your config,g and maybe a sliced gcode file we can check over.

Please post your full config.g and homeall.g as well.

Need to see your probe offset.

@hbrownell said in G32 tries to go negative on X axis:

M208 X20

This means that when your X endstop is triggered your nozzle is actually at 20mm inside of the bed surface? Is that correct? Or do you mean it's 20mm outside of the bed surface?

@hbrownell Never mind. I just needed to update the firmware to 3.22.. it was still on 2.05.

You'll likely need to create a gcodes macros folders at minimum. Though it may be smart enough now to create those if they are missing.

Thanks. I'll mark as solved then. Please create a new thread if you'd like to work through your extrusion issue.

Gotcha. The solder is rosin core 2% flux.

I'll have to look into the bed thermistor. I bought it as an upgrade for the Anet A8 that I was originally going to upgrade to a BLV. But, by the time I got most of the frame bits, I just wound up building an entirely new machine. I'm not sure what thermistor is in it. I just knew that the hot end, bl touch, and duet3d I wanted to be not notch, so I went with all OEM parts.

It was loose cables and bad pins.. I replaced the pins and the problem went away.

Single line

Mesh compensation is defined in M557. https://duet3d.dozuki.com/Wiki/Gcode#Section_M557_Set_Z_probe_point_or_define_probing_grid

If you do the trigger height calibration described here, what is the resulting value? https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

The head bed being on might have an effect. Some bed heaters can create a magnetic field that can interfere with the BLtouch probe. You can add B1 to the end of you M558 to test turning off the bed during probing.

If you're 9mm above try dropping it down 1mm.

yup. that was it. Thank you! don't know how I missed that..

@hbrownell said in Confirmation of setup please!:

have my bed.g file listed above in the code, does that look right?

Well no, that looks like you're doing a 3 point plane form of bed correction.

See the example here that shows two points close to the lead screws being sampled to adjust for the tilt: https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

Each motor must be controlled by its own driver. The positions of the lead screw need to be noted in config.g, and your X gantry must have enough play in it to allow for some independent adjustment.

@hbrownell said in Confirmation of setup please!:

So, when I start my rig, I should run G32 then add G28 with the stl file?

the sequence would be something like G28, G32, G28 again. The first one homes all your axis so you can move them safely. The G32 would correct for any tilt of the X gantry, and then home the axis again because the geometry has potentially changed from the tilt correction. At this point you could run a G29 to map the surface of the bed. Or if you already have a map saved, load it with G29 S1 and start your print.

@hbrownell said in Bed leveling dual Z motor programming:

... Here is the bed.g code
G28 ; home
M401 ; deploy Z probe (omit if using bltouch)
G30 P0 X20 Y100 Z-99999 ; probe near a leadscrew, half way along Y axis
G30 P1 X180 Y100 Z-99999 S2 ; probe near a leadscrew and calibrate 2 motors
M402 ; retract probe (omit if using bltouch)
...

if you dont use a bl touch remove the M402

; Drives
M569 P0 S0 ; Physical drive 0 goes Backwards
M569 P1 S0 ; Physical drive 1 goes Backwards
M569 P2 S1 ; Physical drive 2 goes forwards
M569 P3 S0 ; Physical drive 3 goes forwards

M584 X0 Y1 Z2:4 E3; two Z motors connected to driver outputs Z and E1
M671 X-20:220 Y0:0 S0.5 ; leadscrews at left (connected to Z) and right (connected to E1) of X

M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
DO I NEED TO CALIBRATE EACH STEPPER MOTOR INDEPENDENTLY?
M92 X99.9 Y100.1 Z399.6183 E100 ; Set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z4000.00 E1200.00 ; Set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; Set accelerations (mm/s^2)
M906 X1100.00 Y1100.00 Z1100.00 E1100.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X210 Y210 Z200 S0 ; Set axis maxima

M208 X-5:205 Y0:200 ; X carriage moves from -5 to 205, Y bed goes from 0 to 200

; Endstops
M574 X1 Y1 S1 ; Set active high endstops
; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
G31 P500 X34.82 Y-8 Z0.073 ; Set Z probe trigger value, offset and trigger height
M557 X0:200 Y15:200 S50 ; Define mesh grid
; Heaters
M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
; Fans
M106 P0 S0 I0 F500 H T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
; Automatic saving after power loss is not enabled
; Custom settings are not configured
; Miscellaneous
M501 ; Load saved parameters from non-volatile memory

@hbrownell said in Stuttering / Twitching extruduer:

M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X99.9 Y100.1 Z399.6183 E400.00 ; Set steps per mm

your video shows an ungeared extruder. however 400 steps is normally for a 3:1 geared extruder.

@hbrownell 100 steps/mm on the Z axis seems rather odd. Are you sure that this is the correct value? Just out of curiosity how is your Z axis built? Lead screw? Belt driven? Something else?

I ask because the number of steps/mm have an indirect influence on jerk and acceleration and a direct influence on maximum speed. For the latter you could enter your values in the EMF Calculator at https://reprapfirmware.org/ and see what it tells you. Look for the value given as

Speed at which torque starts to drop (low slip angle)

to be on the safe side.

@dc42 Thank you! On to the next round of troubleshooting.

Your opinions resolve my issue. Now, i am facing the router login issue which i guess simple wifi access guide might help in fixing it. Thanks for sharing it with us

That looks like version 1.04b so you're ok with not cutting the 3.3v trace.